保德选煤厂北部粗煤泥回收系统的改造  

Transformation of coarse slime recovery system in North Baode coal preparation plant

作　　者：冯来宏 周瑞通 

机构地区：[1]神华神东煤炭集团洗选中心保德选煤厂,山西保德036600

出　　处：《洁净煤技术》2013年第2期4-6,共3页Clean Coal Technology

摘　　要：保德选煤厂北部区所用筛网沉降式离心机适宜+0.045 mm粗煤泥处理,而目前该厂采用的煤泥水处理方法使部分-0.045 mm细煤泥成为筛网沉降式离心机的入料,部分细颗粒在系统内循环,造成细泥聚集,恶化了煤泥水性质。针对以上问题,选煤厂采用水力旋流器与螺旋分选机配合使用,更换363,364弧形筛筛网孔径为0.15 mm,螺旋分选机的轻产物直接进入筛网沉降式离心机的改造方案,从而改变筛网沉降式离心机入料粒度组成,改善离心机工况,进而提出了适合选煤厂煤质特征和产品结构的粗煤泥回收系统,最终达到解决问题,实现经济效益最大化的目的。The screenbowl centrifuge applied in North Baode coal preparation plant was suitable for ＋0. 045 mm coarse slime treatment, while some -0. 045 mm fine slime fed into the creenbowl centrifuge due to the changed slime water treatment method. Some fine slime circulated and gathered in system, lowered the slime water quality. To resolve this problem, the plant combined hydro-cyclone with spiral separator, narrow the pore size of 363,364 sieve bend to 0. 15 ram. To reduce the transformation cost,the plant insists on using the original equipments,just feed the light products of spiral into the screenbowl centrifuge. The working condition of screenbowl centrifuge is improved by changing the size composition of coarse slime. This transformation make the coarse recovery system more suitable for practical coal quality and needed products structure.

关 键 词：保德选煤厂 粗煤泥 筛网沉降式离心机 

分 类 号：TD94[矿业工程—选矿]